Find Interview Questions for Backflip studios

Right Answer:
Depth perception in 3D vision refers to the ability to perceive the distance of objects in a three-dimensional space. It is achieved computationally through various techniques, including:

1. **Binocular Disparity**: Using two slightly different images from each eye to calculate depth based on the difference in their positions.
2. **Monocular Cues**: Utilizing single-eye cues like size, texture gradient, overlap, and perspective to infer depth.
3. **Motion Parallax**: Observing how objects move relative to each other as the observer moves, providing depth information based on their relative motion.
4. **Depth Sensors**: Using devices like LiDAR or stereo cameras to measure distances directly.

These methods help create a perception of depth in 3D environments.

Right Answer:
Disparity refers to the difference in the position of an object in the left and right images captured by our two eyes. It is related to depth because greater disparity indicates that an object is closer to the observer, while smaller disparity suggests that the object is farther away.

Right Answer:
Stereo vision is a technique that uses two or more cameras to capture images from different viewpoints to perceive depth and create a 3D representation of a scene. Structure from Motion (SfM) is a process that reconstructs 3D structures from a series of 2D images taken from different angles, estimating camera positions and scene geometry simultaneously. The main difference is that stereo vision relies on simultaneous images from multiple cameras, while SfM uses sequential images from a single camera or multiple cameras over time.

Right Answer:
A point cloud is a collection of data points in a three-dimensional coordinate system, representing the external surface of an object or environment. It is generated using 3D scanning technologies, such as LiDAR, photogrammetry, or depth sensors. In 3D vision applications, point clouds are used for object recognition, scene reconstruction, and analysis in fields like robotics, computer vision, and virtual reality.

Right Answer:
Common algorithms used for stereo matching include:

1. Block Matching
2. Semi-Global Matching (SGM)
3. Dynamic Programming
4. Graph Cuts
5. Belief Propagation
6. Deep Learning-based methods (e.g., Convolutional Neural Networks)

Right Answer:
Scrum is an Agile framework for managing and completing complex projects.

Implementation involves:

1. **Roles:** Defining roles like Product Owner, Scrum Master, and Development Team.
2. **Sprints:** Working in short, time-boxed iterations (Sprints), typically 2-4 weeks.
3. **Artifacts:** Using artifacts like Product Backlog, Sprint Backlog, and Increment.
4. **Events:** Conducting events such as Sprint Planning, Daily Scrum, Sprint Review, and Sprint Retrospective.
5. **Continuous Improvement:** Regularly inspecting and adapting the process based on feedback.

Right Answer:
I've used tools like Jira, Azure DevOps, and Trello for Agile project management. I choose them based on project needs; Jira for complex workflows and robust reporting, Azure DevOps for integrated development environments, and Trello for simpler, visually-oriented task management.

Right Answer:
To facilitate effective sprint retrospectives, I would:

1. **Set the Stage:** Create a safe and open environment where the team feels comfortable sharing.
2. **Gather Data:** Collect information about what went well, what didn't, and any challenges faced during the sprint.
3. **Generate Insights:** Facilitate a discussion to identify root causes and patterns.
4. **Decide on Actions:** Collaborate to define specific, actionable, measurable, achievable, relevant, and time-bound (SMART) improvements.
5. **Close the Retrospective:** Summarize action items and assign owners.
6. **Follow Up:** Track progress on action items in subsequent sprints to ensure continuous improvement.

Right Answer:
Agile ceremonies are recurring meetings within a sprint to facilitate communication, planning, and continuous improvement.

* **Sprint Planning:** The team decides what work to complete in the upcoming sprint. They discuss user stories, estimate effort, and define the sprint goal.

* **Daily Stand-up:** A brief daily meeting where the team shares progress, identifies roadblocks, and coordinates efforts. Each member typically answers: What did I do yesterday? What will I do today? Are there any impediments?

* **Sprint Review:** The team demonstrates the completed work to stakeholders, gathering feedback and ensuring alignment with expectations.

* **Sprint Retrospective:** The team reflects on the past sprint, identifying what went well, what could be improved, and defining action items to enhance future performance.

Right Answer:
* **Epic:** A large, high-level user story that is too big to complete in a single iteration. It's usually broken down into smaller user stories.
* **User Story:** A small, self-contained requirement that represents a valuable piece of functionality for the end-user. It follows the format: "As a [user type], I want [goal] so that [benefit]".
* **Task:** A small, actionable item that needs to be done to complete a user story. It's a technical breakdown of the work required by the development team.

Right Answer:
72519 x 9999 = 7251924801

Right Answer:
VSWR stands for Voltage Standing Wave Ratio. It measures the efficiency of power transmission in a transmission line, indicating how well the load is matched to the line. A lower VSWR value (close to 1:1) indicates better matching and less reflected power.

Right Answer:
The Electoral College is constituted by 538 members, which includes 435 Representatives and 100 Senators, plus 3 electors from Washington, D.C.

Right Answer:
Change management is the process of handling changes in a project or organization in a structured way to minimize disruption and ensure that changes are implemented smoothly. A change request is a formal proposal to modify any aspect of the project, such as scope, schedule, or resources, which must be reviewed and approved before implementation.

Right Answer:
I manage suppliers by establishing clear communication, setting expectations, monitoring performance, building strong relationships, and regularly reviewing contracts and agreements to ensure alignment with project goals.

Right Answer:
The outputs of project closure include:

1. Final project report
2. Lessons learned documentation
3. Formal acceptance of deliverables
4. Release of project resources
5. Closure of contracts
6. Updated project documentation
7. Stakeholder feedback and evaluation